Ahead of today's qualifying session, the air temperature is 33 degrees C, while the track temperature is 52 degrees. It is hot and sunny.

Following the tremendous pace the two Ferraris showed this morning, it will be interesting to see if they can maintain it and indeed convert it into pole position.

The lights go green, and first out is Mark Webber, followed by Ralf, Rosberg and Heidfeld.

Webber crosses the line to post the benchmark time, it's a disappointing 1:14.108, moments later Ralf quickest, posting a 13.776.

Heidfeld goes second (13.899), as Rosberg goes fourth and Montagny fifth.

Jarno Trulli goes quickest in the first sector, but moments later Button goes quicker. Trulli goes second (13.787), but almost instantly Albers and Klien go quicker, before they too are topped, by Barrichello.

Tiago Monteiro tops the timesheets, having gone quickest in the first two sectors. Meanwhile, Coulthard, who had a torrid time this morning, goes second (13.180).

Montoya goes quickest in the first sector, and again in the second. The Colombian crosses the line at 1:12.477, as Speed goes third. Meanwhile, Button is called into the weigh-bridge, which is exactly what happened at Silverstone.

Michael is on track, and goes quickest in the first two sectors. The German crosses the line at 1:11.588, but moments later he's toppled by his Brazilian teammate, who posts 12:11.088.

Under four minutes and Villeneuve, Rosberg and Webber are in the 'danger zone'. That said, Villeneuve goes fourth, which leaves both Toyota's in danger.

Ralf goes third, which puts Button in danger. However, the Englishman goes seventh with a 12.238.

Trulli is out of his car, and being nineteenth, one place behind Rosberg, this means that his session is over. Rosberg looks to be another one to stumble at the first hurdle, as is Coulthard.

At the end of the first part of the session, Massa is quickest, ahead of Michael, Ralf, Heidfeld, Villeneuve, Barrichello, Button, Fisichella, Alonso and Montoya.

We lose Montagny, Liuzzi, Trulli, Rosberg, Sato and Coulthard.

When the second stage of the session gets underway, it is more than a minute before anyone leaves the pits. When they do decide to go to work, it is Webber that leads the way followed by Villeneuve and Heidfeld.

Villeneuve posts the benchmark time, crossing the line at 1:12.391, but this is almost instantly beaten by his teammate. Ralf goes second (11.733) and Webber fourth.

Alonso is on track, as is Raikkonen, the Finn going quickest in the final sector as he begins his flying lap.